638440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1451}}^1$

素因数の和:1473

約数の個数: 32

約数和(自身を含む): 1568160

約数和(自身を除く): 929720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1451, 2902, 5804, 7255, 11608, 14510, 15961, 29020, 31922, 58040, 63844, 79805, 127688, 159610, 319220, 638440]

約数ペア:

[(1, 638440), (2, 319220), (4, 159610), (5, 127688), (8, 79805), (10, 63844), (11, 58040), (20, 31922), (22, 29020), (40, 15961), (44, 14510), (55, 11608), (88, 7255), (110, 5804), (220, 2902), (440, 1451)]